The official page of Iceland's prime minister, as well as sites of the environment and interior ministries, were among those forced offline on Friday. They remained inaccessible until midday on Saturday.

In a video posted online, Anonymous vowed to expose and disrupt the cruel practices involved in Iceland's whaling industry, while calling for a boycott against goods produced there.

"Whales do not have a voice. We will be a voice for them. Its time to speak out about this impending extinction of a species. Its time to let Iceland know we will not stand by and watch as they drive this animal to extinction," said the group.